YOU SAID:
I love my boyfriend. He makes me happy.
INTO JAPANESE
私の彼氏が大好きです。彼は私を幸せになります。
BACK INTO ENGLISH
I love my boyfriend He will be happy to me.
INTO JAPANESE
彼は私に幸せになります、私の彼氏が大好きです。
BACK INTO ENGLISH
He is happy, my boyfriend love me.
INTO JAPANESE
私の彼氏は私を愛して、幸せです。
BACK INTO ENGLISH
My boyfriend loves me and is happy.
INTO JAPANESE
私の彼氏は私を愛して、幸せです。
BACK INTO ENGLISH
My boyfriend loves me and is happy.
That didn't even make that much sense in English.